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%I #4 Nov 29 2014 15:27:29
%S 69,10743,11671623,87861924805,4588026318857390,
%T 1661795248800209092018,4174999762523849415510268532,
%U 72754439546501362273096881625623943,8794003889120582191141511584460660923446950
%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having its maximum diagonal element less than the absolute difference of its antidiagonal elements
%C Diagonal of A251010
%e Some solutions for n=2
%e ..2..2..1....1..1..1....2..0..1....0..2..1....1..0..0....0..1..1....0..2..0
%e ..1..2..2....1..0..0....2..0..1....1..1..2....0..2..2....2..1..1....2..2..0
%e ..1..1..0....0..0..2....2..1..2....2..1..1....2..0..0....1..2..1....1..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 29 2014